A reassessment of the sociability of long-term skid row residents: A social network approach

Despite more than one hundred and fifty empirical studies completed on the subject of skid row, no issue remains so completely muddled than that of the sociability of skid row men. Utilizing network analysis techniques developed in previous work with inner-city populations, the authors interviewed 48 elderly residents of the Bowery. The data dispelled the notion that skid rowers are completely isolated, incapable of intimacy and complex social formation, and unable to enlist the support of their compeers in response to deteriorating health. Nonetheless, as contrasted with other urban populations, they had markedly constricted social worlds. A reinterpretation of the literature is proffered based on these findings.     

Effective directed tests for models with ordered categorical data

This paper offers a new method for testing one‐sided hypotheses in discrete multivariate data models. One‐sided alternatives mean that there are restrictions on the multidimensional parameter space. The focus is on models dealing with ordered categorical data. In particular, applications are concerned with R×C contingency tables. The method has advantages over other general approaches. All tests are exact in the sense that no large sample theory or large sample distribution theory is required. Testing is unconditional although its execution is done conditionally, section by section, where a section is determined by marginal totals. This eliminates any potential nuisance parameter issues. The power of the tests is more robust than the power of the typical linear tests often recommended. Furthermore, computer programs are available to carry out the tests efficiently regardless of the sample sizes or the order of the contingency tables. Both censored data and uncensored data models are discussed.     

A comparison of the independent-samples t-test and the paired-samples t-test when the observations are nonnegatively correlated pairs

An account of the behavior of the independent-samples t-test when applied to homoschedastic bivariate normal data is presented, and a comparison is made with the paired-samples t-test. Since the significance level is not violated when applying the independent-samples t-test to data which consist of positively correlated pairs and since the estimate of the variance is based on a larger number of ‘degrees of freedom’, the results suggest that when the sample size is small, one should not worry much about the possible existence of weak positive correlation. One may do better, powerwise, to ignore such correlation and use the independent-samples t-test, as though the samples were independent.     

Quality of care for youths in group homes

This paper analyzes findings pertaining to quality of care issues concerning group home care for adolescents in the greater Los Angeles County area during 1978-1979. The issues include normalization, institutionalization, treatment goals, continuity of care, and qualifications of child welfare staff, particularly child care workers. Recommendations for improvement are offered.     

Treating Families of Bone Marrow Recipients and Donors

Leukemia and aplastic anemia are beginning to be treated by bone marrow transplants, involving donors and recipients from the same family. Such intimate involvement in the patients life and death struggles typically produces a family crisis and frequent maladaptive responses by various family members. A crisis-focused family therapy approach is described which helps all members, including the hospitalized victim, develop adaptive coping strategies, and learn to deal realistically with expectations while maintaining hope. Physicians, too, must retain their reality-orientation while holding onto hope. Two case histories illustrate common sources of family dysfunction and techniques of intervention through family therapy.     

Unbiased tests for some one-sided testing problems

Unbiased tests are found for various testing problems. In the first model considered we test homogeneity of k + 1 independent one-parameter exponential family populations vs. the tree-top ordering alternative. The tree-top alternative is appropriate for one-sided comparisons for treatments with a control. In the next set of models normality is assumed. In one such model k independent populations have different unknown means but have an unknown common variance. An independent estimate of the variance exists. We test homogeneity of means against the alternative of no homogeneity. We also consider the alternative of an ordering of the means as well as the tree-top ordering. The final model considered is when we take a random sample from a multivariate normal population with unknown mean vector and an unknown covariance matrix of the intraclass type. We test the hypothesis that the mean vector is the zero vector against the one-sided alternative that each mean is nonnegative (with at least one positive).     

Estimation in the singly truncated weibull distribution with an unknown truncation point

When truncation points are unknown, they must be treated as additional parameters to be estimated from the sample data. In this article, estimators are derived for the truncation parameter in addition to basic parameters of both 1eft and riqht sing1y truncated Weibull distributions, Maximum likelihood estimators and estimators involving expected values of appropriate order statistics are derived, Asymptotic sampling errors of estimates are also given, Ill ustrative examples are inc1uded.     

Recession and Divorce in the United States, 2008–2011

Recession may increase divorce through a stress mechanism, or reduce divorce by exacerbating cost barriers or strengthening family bonds. After establishing an individual-level model predicting US women’s divorce, the paper tests period effects, and whether unemployment and foreclosures are associated with the odds of divorce using the 2008–2011 American Community Survey. Results show a downward spike in the divorce rate after 2008, almost recovering to the expected level by 2011, which suggests a negative recession effect. On the other hand, state foreclosure rates are positively associated with the odds of divorce with individual controls, although this effect is not significant when state fixed effects are introduced. State unemployment rates show no effect on odds of divorce. Future research will have to determine why national divorce odds fell during the recession, while state-level economic indicators were not strongly associated with divorce. Exploratory analysis which shows unemployment decreasing divorce odds for those with college degrees, while foreclosures have the opposite effect, provide one possible avenue for such research.